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What is the process of transcriptional initiation?
a. the holoenzyme identifies the promoter then a few nucleotides of the RNA is synthesized
b. the holoenzyme identifies the promoter, unwinds the DNA, and then a few nucleotides of the RNA is synthesized
c. the core enzyme begins synthesizing the RNA
d. sigma binds to the promoter, recruits the core enzyme in, and then RNA is synthesized
e. the holoenzyme identifies the promoter, unwinds the DNA, and then sigma falls off
In maize, a dominant allele A is necessary for seed color, as opposed to colorless (a). Another gene has a recessive allele wx that results in waxy starch, as opposed to normal starch (Wx). The two genes segregate independently. An Aa WxWx plant i..
Lack of iron in photic zone of the open ocean restricts the size of plankton populations. Iron is what kind of factor for marine plankton.
Why use starved starved yeast rather than sugar fed yeasts for fermentation.What is the aim of ferementation after glycolysis.
even though endospore may be observed as a result of routine Simple or Gram Staining , it is still necessary to perform the Schaeffer-Fulton stain, Why ?
As a laboratory assistant you were asked to determine the total number of bacteria in the urine of a person with a urinary tract disorder.
The mitochondria a of mutant yeast strain is discovered to oxidize NADH even in the absensce of ADP. How would the P/O ratio of this mutant compare to the wilfe type?
Determining the concentration of nacl that is isotonic for a plant parenchyma cell using 1.0 M nacl, water, test tubes in which to dilute a th nacl, using elodea leaves.
If the cell cannot recover from injury, the damage is irreversible and cell death is the result. Define, compare and contrast the 3 pathognomic signs of cell death.
Use corn and cottonseed meal to formulate one hundred pounds of a supplement that contains 17 percent CP and .91 Mcal NEL/ lb. Of course,
In a cell containing two chromosome pairs, what would the number of chromosomes be in each of the daughter cells following meiosis in the event of an error in division in which the sister chromatids of one chromosome did not separate during meiosi..
The external faces of some of the proteins in the plasma membrane have carbohydrate groups attached to them.What role do such "sugar-coated" proteins play.
Determine the probability of rolling one six sided die and obtaining the following numbers?
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